diff options
Diffstat (limited to 'scripts/kconfig/confdata.c')
| -rw-r--r-- | scripts/kconfig/confdata.c | 460 |
1 files changed, 460 insertions, 0 deletions
diff --git a/scripts/kconfig/confdata.c b/scripts/kconfig/confdata.c new file mode 100644 index 0000000..1e82ae3 --- /dev/null +++ b/scripts/kconfig/confdata.c @@ -0,0 +1,460 @@ +/* + * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org> + * Released under the terms of the GNU GPL v2.0. + */ + +#include <sys/stat.h> +#include <ctype.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <time.h> +#include <unistd.h> + +#define LKC_DIRECT_LINK +#include "lkc.h" + +const char conf_def_filename[] = ".config"; + +const char conf_defname[] = "arch/$ARCH/defconfig"; + +const char *conf_confnames[] = { + ".config", + "/lib/modules/$UNAME_RELEASE/.config", + "/etc/kernel-config", + "/boot/config-$UNAME_RELEASE", + conf_defname, + NULL, +}; + +static char *conf_expand_value(const signed char *in) +{ + struct symbol *sym; + const signed char *src; + static char res_value[SYMBOL_MAXLENGTH]; + char *dst, name[SYMBOL_MAXLENGTH]; + + res_value[0] = 0; + dst = name; + while ((src = strchr(in, '$'))) { + strncat(res_value, in, src - in); + src++; + dst = name; + while (isalnum(*src) || *src == '_') + *dst++ = *src++; + *dst = 0; + sym = sym_lookup(name, 0); + sym_calc_value(sym); + strcat(res_value, sym_get_string_value(sym)); + in = src; + } + strcat(res_value, in); + + return res_value; +} + +char *conf_get_default_confname(void) +{ + struct stat buf; + static char fullname[PATH_MAX+1]; + char *env, *name; + + name = conf_expand_value(conf_defname); + env = getenv(SRCTREE); + if (env) { + sprintf(fullname, "%s/%s", env, name); + if (!stat(fullname, &buf)) + return fullname; + } + return name; +} + +int conf_read(const char *name) +{ + FILE *in = NULL; + char line[1024]; + char *p, *p2; + int lineno = 0; + struct symbol *sym; + struct property *prop; + struct expr *e; + int i; + + if (name) { + in = zconf_fopen(name); + } else { + const char **names = conf_confnames; + while ((name = *names++)) { + name = conf_expand_value(name); + in = zconf_fopen(name); + if (in) { + printf("#\n" + "# using defaults found in %s\n" + "#\n", name); + break; + } + } + } + + if (!in) + return 1; + + for_all_symbols(i, sym) { + sym->flags |= SYMBOL_NEW | SYMBOL_CHANGED; + sym->flags &= ~SYMBOL_VALID; + switch (sym->type) { + case S_INT: + case S_HEX: + case S_STRING: + if (sym->user.val) + free(sym->user.val); + default: + sym->user.val = NULL; + sym->user.tri = no; + } + } + + while (fgets(line, sizeof(line), in)) { + lineno++; + sym = NULL; + switch (line[0]) { + case '#': + if (memcmp(line + 2, "CONFIG_", 7)) + continue; + p = strchr(line + 9, ' '); + if (!p) + continue; + *p++ = 0; + if (strncmp(p, "is not set", 10)) + continue; + sym = sym_find(line + 9); + if (!sym) { + fprintf(stderr, "%s:%d: trying to assign nonexistent symbol %s\n", name, lineno, line + 9); + break; + } + switch (sym->type) { + case S_BOOLEAN: + case S_TRISTATE: + sym->user.tri = no; + sym->flags &= ~SYMBOL_NEW; + break; + default: + ; + } + break; + case 'C': + if (memcmp(line, "CONFIG_", 7)) + continue; + p = strchr(line + 7, '='); + if (!p) + continue; + *p++ = 0; + p2 = strchr(p, '\n'); + if (p2) + *p2 = 0; + sym = sym_find(line + 7); + if (!sym) { + fprintf(stderr, "%s:%d: trying to assign nonexistent symbol %s\n", name, lineno, line + 7); + break; + } + switch (sym->type) { + case S_TRISTATE: + if (p[0] == 'm') { + sym->user.tri = mod; + sym->flags &= ~SYMBOL_NEW; + break; + } + case S_BOOLEAN: + if (p[0] == 'y') { + sym->user.tri = yes; + sym->flags &= ~SYMBOL_NEW; + break; + } + if (p[0] == 'n') { + sym->user.tri = no; + sym->flags &= ~SYMBOL_NEW; + break; + } + break; + case S_STRING: + if (*p++ != '"') + break; + for (p2 = p; (p2 = strpbrk(p2, "\"\\")); p2++) { + if (*p2 == '"') { + *p2 = 0; + break; + } + memmove(p2, p2 + 1, strlen(p2)); + } + if (!p2) { + fprintf(stderr, "%s:%d: invalid string found\n", name, lineno); + exit(1); + } + case S_INT: + case S_HEX: + if (sym_string_valid(sym, p)) { + sym->user.val = strdup(p); + sym->flags &= ~SYMBOL_NEW; + } else { + fprintf(stderr, "%s:%d: symbol value '%s' invalid for %s\n", name, lineno, p, sym->name); + exit(1); + } + break; + default: + ; + } + break; + case '\n': + break; + default: + continue; + } + if (sym && sym_is_choice_value(sym)) { + struct symbol *cs = prop_get_symbol(sym_get_choice_prop(sym)); + switch (sym->user.tri) { + case no: + break; + case mod: + if (cs->user.tri == yes) + /* warn? */; + break; + case yes: + if (cs->user.tri != no) + /* warn? */; + cs->user.val = sym; + break; + } + cs->user.tri = E_OR(cs->user.tri, sym->user.tri); + cs->flags &= ~SYMBOL_NEW; + } + } + fclose(in); + + if (modules_sym) + sym_calc_value(modules_sym); + for_all_symbols(i, sym) { + sym_calc_value(sym); + if (sym_has_value(sym) && !sym_is_choice_value(sym)) { + if (sym->visible == no) + sym->flags |= SYMBOL_NEW; + switch (sym->type) { + case S_STRING: + case S_INT: + case S_HEX: + if (!sym_string_within_range(sym, sym->user.val)) + sym->flags |= SYMBOL_NEW; + default: + break; + } + } + if (!sym_is_choice(sym)) + continue; + prop = sym_get_choice_prop(sym); + for (e = prop->expr; e; e = e->left.expr) + if (e->right.sym->visible != no) + sym->flags |= e->right.sym->flags & SYMBOL_NEW; + } + + sym_change_count = 1; + + return 0; +} + +int conf_write(const char *name) +{ + FILE *out, *out_h; + struct symbol *sym; + struct menu *menu; + const char *basename; + char dirname[128], tmpname[128], newname[128]; + int type, l; + const char *str; + time_t now; + int use_timestamp = 1; + char *env; + + dirname[0] = 0; + if (name && name[0]) { + struct stat st; + char *slash; + + if (!stat(name, &st) && S_ISDIR(st.st_mode)) { + strcpy(dirname, name); + strcat(dirname, "/"); + basename = conf_def_filename; + } else if ((slash = strrchr(name, '/'))) { + int size = slash - name + 1; + memcpy(dirname, name, size); + dirname[size] = 0; + if (slash[1]) + basename = slash + 1; + else + basename = conf_def_filename; + } else + basename = name; + } else + basename = conf_def_filename; + + sprintf(newname, "%s.tmpconfig.%d", dirname, (int)getpid()); + out = fopen(newname, "w"); + if (!out) + return 1; + out_h = NULL; + if (!name) { + out_h = fopen(".tmpconfig.h", "w"); + if (!out_h) + return 1; + } + sym = sym_lookup("KERNELRELEASE", 0); + sym_calc_value(sym); + time(&now); + env = getenv("KCONFIG_NOTIMESTAMP"); + if (env && *env) + use_timestamp = 0; + + fprintf(out, "#\n" + "# Automatically generated make config: don't edit\n" + "# Linux kernel version: %s\n" + "%s%s" + "#\n", + sym_get_string_value(sym), + use_timestamp ? "# " : "", + use_timestamp ? ctime(&now) : ""); + if (out_h) + fprintf(out_h, "/*\n" + " * Automatically generated C config: don't edit\n" + " * Linux kernel version: %s\n" + "%s%s" + " */\n" + "#define AUTOCONF_INCLUDED\n", + sym_get_string_value(sym), + use_timestamp ? " * " : "", + use_timestamp ? ctime(&now) : ""); + + if (!sym_change_count) + sym_clear_all_valid(); + + menu = rootmenu.list; + while (menu) { + sym = menu->sym; + if (!sym) { + if (!menu_is_visible(menu)) + goto next; + str = menu_get_prompt(menu); + fprintf(out, "\n" + "#\n" + "# %s\n" + "#\n", str); + if (out_h) + fprintf(out_h, "\n" + "/*\n" + " * %s\n" + " */\n", str); + } else if (!(sym->flags & SYMBOL_CHOICE)) { + sym_calc_value(sym); + if (!(sym->flags & SYMBOL_WRITE)) + goto next; + sym->flags &= ~SYMBOL_WRITE; + type = sym->type; + if (type == S_TRISTATE) { + sym_calc_value(modules_sym); + if (modules_sym->curr.tri == no) + type = S_BOOLEAN; + } + switch (type) { + case S_BOOLEAN: + case S_TRISTATE: + switch (sym_get_tristate_value(sym)) { + case no: + fprintf(out, "# CONFIG_%s is not set\n", sym->name); + if (out_h) + fprintf(out_h, "#undef CONFIG_%s\n", sym->name); + break; + case mod: + fprintf(out, "CONFIG_%s=m\n", sym->name); + if (out_h) + fprintf(out_h, "#define CONFIG_%s_MODULE 1\n", sym->name); + break; + case yes: + fprintf(out, "CONFIG_%s=y\n", sym->name); + if (out_h) + fprintf(out_h, "#define CONFIG_%s 1\n", sym->name); + break; + } + break; + case S_STRING: + // fix me + str = sym_get_string_value(sym); + fprintf(out, "CONFIG_%s=\"", sym->name); + if (out_h) + fprintf(out_h, "#define CONFIG_%s \"", sym->name); + do { + l = strcspn(str, "\"\\"); + if (l) { + fwrite(str, l, 1, out); + if (out_h) + fwrite(str, l, 1, out_h); + } + str += l; + while (*str == '\\' || *str == '"') { + fprintf(out, "\\%c", *str); + if (out_h) + fprintf(out_h, "\\%c", *str); + str++; + } + } while (*str); + fputs("\"\n", out); + if (out_h) + fputs("\"\n", out_h); + break; + case S_HEX: + str = sym_get_string_value(sym); + if (str[0] != '0' || (str[1] != 'x' && str[1] != 'X')) { + fprintf(out, "CONFIG_%s=%s\n", sym->name, str); + if (out_h) + fprintf(out_h, "#define CONFIG_%s 0x%s\n", sym->name, str); + break; + } + case S_INT: + str = sym_get_string_value(sym); + fprintf(out, "CONFIG_%s=%s\n", sym->name, str); + if (out_h) + fprintf(out_h, "#define CONFIG_%s %s\n", sym->name, str); + break; + } + } + + next: + if (menu->list) { + menu = menu->list; + continue; + } + if (menu->next) + menu = menu->next; + else while ((menu = menu->parent)) { + if (menu->next) { + menu = menu->next; + break; + } + } + } + fclose(out); + if (out_h) { + fclose(out_h); + rename(".tmpconfig.h", "include/linux/autoconf.h"); + file_write_dep(NULL); + } + if (!name || basename != conf_def_filename) { + if (!name) + name = conf_def_filename; + sprintf(tmpname, "%s.old", name); + rename(name, tmpname); + } + sprintf(tmpname, "%s%s", dirname, basename); + if (rename(newname, tmpname)) + return 1; + + sym_change_count = 0; + + return 0; +} |
